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    Mercruiser 5.0 50 degrees at idle

    Hey guys! Long time reader but first time poster. I have a 99 rinker with a mercruiser 5.0 carbed vortec with a thunderbolt 5 ignition, i was changing all the ignition related items (sensor, plugs, wires and cap/rotor) and not I cant seem to get it timed correctly. I put it on base timing mode...
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